diff --git a/plugins/beers/beers_test.go b/plugins/beers/beers_test.go
new file mode 100644
index 0000000..abb0e38
--- /dev/null
+++ b/plugins/beers/beers_test.go
@@ -0,0 +1,158 @@
+// © 2013 the CatBase Authors under the WTFPL. See AUTHORS for the list of authors.
+
+package beers
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/velour/catbase/bot"
+	"github.com/velour/catbase/plugins/counter"
+)
+
+func makeMessage(payload string) bot.Message {
+	isCmd := strings.HasPrefix(payload, "!")
+	if isCmd {
+		payload = payload[1:]
+	}
+	return bot.Message{
+		User:    &bot.User{Name: "tester"},
+		Channel: "test",
+		Body:    payload,
+		Command: isCmd,
+	}
+}
+
+func makeBeersPlugin(t *testing.T) (*BeersPlugin, *bot.MockBot) {
+	mb := bot.NewMockBot()
+	counter.New(mb)
+	b := New(mb)
+	assert.NotNil(t, b)
+	return b, mb
+}
+
+func TestBeersPlusPlus(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("beers++"))
+	assert.Len(t, mb.Messages, 1)
+	b.Message(makeMessage("beers++"))
+	assert.Len(t, mb.Messages, 2)
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 2, it.Count)
+}
+
+func TestBeersMinusMinus(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("beers = 5"))
+	assert.Len(t, mb.Messages, 1)
+	b.Message(makeMessage("beers--"))
+	assert.Len(t, mb.Actions, 1)
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 4, it.Count)
+}
+
+func TestImbibe(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("!imbibe"))
+	assert.Len(t, mb.Messages, 1)
+	b.Message(makeMessage("!imbibe"))
+	assert.Len(t, mb.Messages, 2)
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 2, it.Count)
+}
+
+func TestBourbon(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("bourbon++"))
+	assert.Len(t, mb.Messages, 1)
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 2, it.Count)
+}
+
+func TestEq(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("!beers = 3"))
+	assert.Len(t, mb.Messages, 1)
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 3, it.Count)
+}
+
+func TestEqNeg(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("!beers = -3"))
+	assert.Len(t, mb.Messages, 1)
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 0, it.Count)
+}
+
+func TestEqZero(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("beers += 5"))
+	b.Message(makeMessage("!beers = 0"))
+	assert.Len(t, mb.Messages, 2)
+	assert.Contains(t, mb.Messages[1], "reversal of fortune")
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 0, it.Count)
+}
+
+func TestBeersPlusEq(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("beers += 5"))
+	assert.Len(t, mb.Messages, 1)
+	b.Message(makeMessage("beers += 5"))
+	assert.Len(t, mb.Messages, 2)
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 10, it.Count)
+}
+
+func TestPuke(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("beers += 5"))
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 5, it.Count)
+	b.Message(makeMessage("puke"))
+	it, err = counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 0, it.Count)
+}
+
+func TestBeersReport(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Message(makeMessage("beers += 5"))
+	it, err := counter.GetItem(mb.DB(), "tester", "booze")
+	assert.Nil(t, err)
+	assert.Equal(t, 5, it.Count)
+	b.Message(makeMessage("beers"))
+	assert.Contains(t, mb.Messages[1], "5 beers")
+}
+
+func TestHelp(t *testing.T) {
+	b, mb := makeBeersPlugin(t)
+	b.Help("channel", []string{})
+	assert.Len(t, mb.Messages, 1)
+}
+
+func TestBotMessage(t *testing.T) {
+	b, _ := makeBeersPlugin(t)
+	assert.False(t, b.BotMessage(makeMessage("test")))
+}
+
+func TestEvent(t *testing.T) {
+	b, _ := makeBeersPlugin(t)
+	assert.False(t, b.Event("dummy", makeMessage("test")))
+}
+
+func TestRegisterWeb(t *testing.T) {
+	b, _ := makeBeersPlugin(t)
+	assert.Nil(t, b.RegisterWeb())
+}